Elements in Tool Steel

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In this article, we would like to discuss the elements that make up tool & high speed steels. What do these elements do to provide the mechanical and physical properties we need for our applications? The most common elements are the following:

CARBON (C): this is the most basic alloying element which enables steel to harden. Carbon combines with the other elements to form hard, wear-resistant carbides.

MANGANESE (Mn): controls hardenability in alloy cold work steels.

SILICON (Si): improves toughness in the shock resisting steels group. Added to hot work steels to raise critical points and reduce scaling tendencies. Added to O-6 & A-10 to form graphite.

CHROMIUM (Cr): controls hardenability and is added for abrasion resistance and hot hardness.

TUNGSTEN (W): provides red hardness and hard wear resistant carbides that are harder than chrome and iron carbides. Also used to improve hardenability in tool & high speed steels. Combines very well with molybdenum and vanadium.

MOLYBDENUM (Mo): molybdenum has double the potency of tungsten to provide red hardness resistance. Added to steels to improve hardenability.

VANADIUM (V): provides red hardness resistance. Vanadium carbides are harder than and more abrasion resistant than other carbides. Contributes to grain refinement when added in small quantities. Combines very well with other carbides.

COBALT (Co): greatly improves red hardness. Cobalt does not combine with other carbides as it does not form carbides and remains in solid solution.




Welcome to Otai Special Steel
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A high-technology steel mill in Dongguan, China.
With over 16 years of experience we provide high-quality tool steel, Mould Steels, Special Steels made exactly to your specifications. The benefits of working with us include:

Accept Variety Payment– T/T, D/A, D/P,L/C,  Western Union, MoneyGram.
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No middle men – deal directly with the source
Supply any type of steel – we have a huge network of partner mills available to us
Free Tool Steel Sample – to ensure you are satisfied, we allow you to test our special steels, tool steels mould steels before buying
High tech machinery – we are proud of our powerful, modern machinery
Precision engineering – our 16 years experience in the steels industry means the quality we provide is world class

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